Updated 10 February 2015

Seizure and epilepsy

A seizure is an uncontrolled burst of activity in the brain.

Different kinds of seizure have different effects, from fleeting loss of consciouness to convulsions.

First aid centres on removing dangerous objects from around the person, and providing reassurance.

A convulsive seizure that continues longer than five minutes, or when consciousness is not regained between seizures, is a medical emergency.

What is a seizure?A seizure is an uncontrolled burst of activity in the brain. Different types of seizure produce different symptoms, from brief 'blanking out", to convulsions with loss of consciousness and muscle spasms.

Epilepsy is a condition in which seizures recur over an extended period. Most seizures last no longer than a few minutes and end spontaneously, but in some cases emergency help is essential.

What are the signs of seizure?Seizures are classified according to where they occur in the brain and the signs shown by the affected person. The following are the signs of some of the more common types of seizure:

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The information on Health24 is for educational purposes only, and is not intended as medical advice, diagnosis or treatment. If you are experiencing symptoms or need health advice, please consult a healthcare professional. See additional information.